The most simple way to describe an adverb is that it is a word that can modify a verb, in other words describe it, for example she runs quickly. The verb in this sentence is runs, and this has been modified with the adverb quickly. They may also modify an adjective to add further information, such as he is quite fat. In this sentence, the adjective fat has been modified by the adverb quite. Finally, an adverb can be used to modify an entire sentence, for example Luckily, I had enough money. In this example, we see that the adverb luckily modifies the rest of the sentence in its entirety.

So, what is an adverb? An adverb is a part of speech used to describe a verb, an adjective or another adverb. It tells us how, where, when, how much and with what frequency.